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Slackのカスタム絵文字を全てダウンロードする

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前提/環境

  • Node.js
  • Windows(Linux系でもパスを読み替えれば多分おk)
  • 画像保存用に「image」ディレクトリをあらかじめ作成しておく

手順

必要パッケージインストール

# npm install slack-node
# npm install request
# npm install fs

画像保存(スクリプト実行)

sample.js
var Slack = require('slack-node');
var request = require('request');
var fs = require('fs');

apiToken = "<apitoken>";
slack = new Slack(apiToken);

slack.api("emoji.list", function (err, response) {
    for(key in response.emoji){
        url = response.emoji[key];
        //エイリアスは無視
        if(url.match(/alias/)){
            continue;
        }
        request
        .get(url)
        .on('response', function (res) {
        })
        .pipe(fs.createWriteStream('image\\'+key+'.png'));
    }
});

参考

[NodeJS] requestモジュールを使って、サーバーから画像ファイルをダウンロードする - YoheiM .NET http://www.yoheim.net/blog.php?q=20150104

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